Programmable AC Power Source

ER-SW Series Features:
1. 10 memory locations for easy test setup and recall;
2. Double protection with hardware and software;
3. Free Instrument control software available;
4. Simulate transient conditions;
5. Programmable starting, voltage and current limit;
6. LCD to monitor voltage, current, frequency, power and power factor;
7. Built- in RS232, RS485, communication port, suitable for remote monitoring;
8. Capable for each phase unbalance loads.

Product Details

ER-SW Programmable AC Power Source


ER-SW series Programmable AC Power Sources have the ability to simulate the AC voltage and frequency used in all countries. They are excellent instruments for R&D,design production testing/evaluation,and QAverification. In addition, the frequency range covers 500 Hz, making these products ideal for commercial and defense avionics applications.

The ER-SWseries delivers maximum rated power for any adjustable output voltage up to 300Vac (L-N) / 520Vac (L-L )for 3 phase units, and at any adjustable frequency between 40Hz to 500 Hz.

It integrates IGBT made by Mitsubishi, Siemens, and Infineon, and combines microprocessor and ARM &DSP control design together for quick response and higher reliability and parallel operation.


10 memory locations for easy test setup and recall

Double protection with hardware and software

Free Instrument control software available

Simulate transient conditions

Programmablestarting,voltage and current limit

LCD to monitor voltage, current, frequency, power and power factor

Built- in RS232, RS485,communication port, suitable for remote monitoring

Capable for each phase unbalance loads



Capacity: 1KVA to 450KVA

Overload: 110% 15Mins,125% 300s,150% 30s


1 phase 120V+/-20%,1 phase 220V+/-20%,3 x127V/220V+/-20%,

3 x220V/380V+/-20% or as per your specific requirement(select one individual voltage)

Frequency: 0-70Hz

Power Factor:

≥0.8 (Standard Type)

≥0.9(12-pulse Type,option item)


1 phase 10-150V/20-300V adjustable

3 phase 17-260V/34-520V adjustable(L-L)

(Set your desired voltage )

Current:0-Limit (Set your desired current )


Voltage Regulation:+/-1%≥100V

Frequency Regulation:+/-0.1%


Distortion: THD<3%@ linear load≥100V

Phase Shift:

120°+/-1°(no load/ balance load)

120°+/-3°(33% unbalance load)

120°+/-4°(100% unbalance load)


Over/under voltage

Over current,Over load

Over temperature,Short circuit

Voltage difference between each phase<3V

Additional output contactor(Option item)



Working condition

Temperature:-10 to 40℃






Mean Time Between Failure(MTBF) 50,000H

Mean time to restoration(MTTR)<30 min

Overall efficiency≥85%



IEC 62321




1. What is your quotation condition?

If you have DHL or Fedex account ,we can quote EXW price ,otherwise CIF or FOB price.

2.Do you have any discount when procurement? 

We will quote sample price at first and we will quote volume price if you need more quantity.

3.How long is the delivery time?

For sensors,parts,modules : in stock-one week;no stock-2-4weeks; For systems,generally ,8-12 weeks.

4.How to deal with the quality problems?

If confirmation of product quality problem we can replace it freely for customer in the shortest period.

If interested in Programmable AC Power Source, pls contact us :


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